AIChE | The Global Home of Chemical Engineers
William F. Banholzer, Mark E. Jones, Keith J. Watson
Considering the range of possibilities and constraints, a major transformation of the chemical industry's current capital structure is unlikely for at least a few decades.
Ahmad H. Haidari, Andre Bakker, Lanre M. Oshinowo
Computational fluid dynamics has moved from mainframes to PCs and laptops. Newer and better software lets you conduct analyses not possible before, and regular engineers, not just experts, can now carry out CFD.
Savvy employers are learning to value experienced engineers. Here's how you can take advantage of this trend.
A number of companies are honing techniques to produce a wide variety of pharmaceuticals, such as therapeutic proteins and monoclonal antibodies in plants.
R. Bruce Hartman, Martin C. Welch
Use this audit procedure to evaluate the current performance of your process safety management processes as well as their future viability.
Lee D. Hoffman , Ronald W. Zdrojeski
Preparation and training can help minimize your facility’s — and your own — vulnerability to criminal prosecution for environmental violations.
Jeffrey Michael Forde, Joseph W. Hower., Anne McQueen, Sunil Ojha
Here are guidelines for determining the scope of the control system, sizing the enclosure, and specifying the scrubber design.
Elli Maria Barampouti, Sofia Mai, Apostolos Vlyssides
Unlike time-consuming conventional methods, this approach to designing a dissolved air flotation (DAF) plant requires only the physical characteristics of the flocs — their size and density, flowrate and temperature.
This article presents the challenges that an engineer might encounter when designing or scaling up bioprocesses and offers practical solutions, including those cited in literature.
John C. Birkmire, P.E.
Proper design, fabrication, assembly and operation of a pressure vessel closure are essential to ensuring product containment, integrity and quality.
Kristin M. Malosh
Achieving and maintaining ISO 14000 certification for an environmental management system (EMS) is a difficult task that can be made easier by following these suggestions.
Kevin G. Joback
Physical property values are essential for many chemical engineering tasks. This article reviews sources of physical property data, discusses the use of experimental methods to measure properties, and details several types of estimation techniques.
Joseph F. Louvar
Save time and money by using this approach to fractional-factorial design of experiments (DOE) for studies involving six or seven variables. <br>
James R. Risko
Steam trap failure can affect process operations and reduce profits. Choosing the right steam traps can improve reliability and reduce cost.
Ander Beain, Jay Heidari, Conrad Gamble
Follow these guidelines for applying side-stream filtration to on-line cleaning, and chemical or mechanical cleaning to equipment that has been drained of fluid.
Brian Harkins, Karen Mills
Discover a plant-wide solution that provides production accounting results that both engineers and accountants can agree on
Michael J. Gentilcore
Operating at a constant level can reduce the loss of the replacement solvent to the distillate by 50–70%.
Christopher Haslego, Graham T. Polley
Here's how to incorporate plate-and-frame exchangers into new plant design using pinch analysis.
Dawn G. Rittenhouse
Here's how to assess your organization's performance on environmental, economic and social issues and prepare a plan to improve its sustainability.
Aimee McKane , Vestal Tutterow, Don Casada
Identify ways to minimize the lifecycle costs of your pumping system
Jeffrey Bolin, Matthew Schroeder, Michael Sklash
These tools and techniques can be used to make sense of soil or groundwater contamination - where it came from, who is responsible for it, and how to fairly allocate the costs to clean it up.
Barry C. Buckland
The challenges of vaccine development are not limited to identification of suitable antigens, adjuvants and delivery methods, but include regulatory, technical and manufacturing hurdles in translating a vaccine candidate to the clinic.
Baha Korkmaz, Marty Martin
By incorporating the batch standards S88 and S95 into the entire product lifecycle, companies can optimize their processes and project management. This enables them to rapidly get their products to market — a critical factor in staying competitive.
John D. Barry
This article introduces a novel approach to solving flow and pipe-sizing problems based on two new dimensionless quantities that are independent of line size and flow.
Rising gas prices and climate uncertainty have thrust energy and environmental policy to the forefront of modern American politics.
David Hogsett, Youngmi Kim, Michael R. Ladisch, Nathan S. Mosier, Eduardo Ximenes
Biochemical and thermochemical process technologies being developed to convert wood and other lignocellulosic feedstocks to liquid fuels will drive the transition from corn-based ethanol to advanced biofuels.
Bill Carlson, Joe Dumoit, Paul Yanisko, Shiying Zheng
The benefits of nitrogen blanketing include improved process safety, better product quality, and longer equipment life. Here's how to achieve the desired safety or quality results while minimizing costs.
Travis W. Walker
Before solar and wind energy can be widely exploited, a method for storing the energy provided by these intermittent sources and releasing it as demand arises must be developed.
John A. Williams
A few basic types of bioreactor designs are used to produce a wide range of products, from antibiotics to foods to fuels. Here's how to pick the best options for your application.
The common assumption that for real liquids cv can be approximated by cp is not correct. To get accurate cv values, use equations of state.
Fieldbus technologies have become increasingly popular in process control applications. This article highlights the practical applications and economics of various buses, so that an engineer can choose the best one for his or her process.
Joseph W. Hower, Michael P. Scott, Stanley R. Hayes
Follow this procedure for evaluating the strategic importance of greenhouse gas (GHG) issues to your firm and developing a corporate strategy for managing GHGs.
This strategic approach to interviewing will help you handle difficult questions with ease and success.
To function properly at optimum capacity and efficiency, multi-pass trays must be designed so that the liquid and vapor flows are properly balanced. This article provides guidance on how to achieve that.
Richard J. Kinsley
To become a leader people want to follow, focus on the team's objectives, avoid self-deception, build strong relationships, and enable others to achieve the team's goals.
Modular design principles are well known, but have found only niche applications in the Chemical industry. This article outlines an innovative methodology, whereby plant and process design may be conducted in parallel using components with pre-...
Henry Z. Kister
When designing a new distillation column or revamping an existing one, it is important to understand the factors that affect overall tray efficiency.
Membranes offer inherent advantages over absorption-based CO2 capture from post-combustion fluegas and pre-combustion syngas, but numerous design and scale-up challenges remain.
R. Wayne Garland
Using a formal change procedure promotes safe operations and prevents injuries and deaths, and it will also favorably impact the bottom line.
See how these six high-level women in industry and academia got where they are today and what it's like to be a successful woman in a male-dominated field.
Clare Marshall Wood
A coach can help you tap into your potential to achieve your goals and to live a more fulfilling and productive life.
The key to effective job search is organization. Follow this plan to keep you campaign on track and keep track of your campaign.
Colleen McCarthy, John M. Beath
This hybrid technique of determining whether a plant is meeting its regulatory requirements helps overcome the pitfalls of action-tracking and compliance auditing.
The more important question is “how much to engineer?” Use this technique to evaluate the level of engineering effort required, and justified, for a project.
Suzanne A. Shelley
An array of nanoscale developments are poised to revolutionize cancer diagnosis and drug discovery efforts, and create new ways to target the delivery of potent, often toxic drug therapies, while reducing their dose-limiting side effects.
Robert F. Boland
A compliance management system (CMS) helps companies meet regulatory reporting requirements, improve environmental performance, reduce environmental compliance costs, and increase organizational efficiency. Here's a run-down of what to look for when...
Decision-makers often require cost estimates for products and processes at the earliest stages of development — when many cost-determining factors remain uncertain. Identifying variables that impact cost estimates, and putting them in context, will...
Specialty metals should be considered for processes that push beyond the corrosion limits of steel. New composites and surface alloy technologies expand the options for defending against corrosion.
Updates in this issue include: State of the Union Address Identifies Importance of Manufacturing and Energy to U.S. Economy Scorpions Inspire Tough Surface Nanorods Line Up for Assembly Nanosphere Structure Boosts Light Absorption Zeolite Catalyst...
Geoffrey M. Spinks, Gordon G. Wallace
Inherently conducting polymers (ICPs) exhibit a variety of dynamic behaviors that make them an exciting platform for a new generation of bionic devices.
Andrew Vieler, Marco S. Satyro, Rajeev Agarwal, Yau-Kun Li, Oscar Santollani
Simulation software is a commonly used design tool, thanks mainly to its availability on the desktop. However, one has to understand thermodynamic basics before accepting the desktop's final answer.
Brad A. Walker, James E. Lenhart, Karen D. Smith
Faced with more distractions than ever, operators need an environment that is conducive for dealing with abnormal, as well as normal, situations. Effective control room design can help.
Julian B. Fasano, Kevin J. Myers, Mark F. Reeder
It is common knowledge that baffles promote better flow in an agitated vessel, but how to apply them and what kind to use take some ingenuity.
Christopher Haslego, Graham T. Polley
Pinch analysis retrofit procedures can be extended to handle compact exchangers.
Mordechai Shacham, Neima Brauner , Michael B. Cutlip
Reduce the chances of computational errors by following this technique, which combines the use of a standard spreadsheet with a numerical software package.
The most successful employee-retention programs begin with recruiting and hiring the individual who best matches the position and best fits into the company's culture.
Many batch operations can be scaled up directly from the bench to the plant by developing the process and performing lab testing with the scaleup in mind.
Brian H. Pittenger, Herman Purutyan, Gabriel I. Tardos
Use these guidelines to avoid potential caking problems. The key steps are to select a material characterization method, identify the factors that can be feasibly controlled and conduct tests to confirm that process/handling changes yield the...
Stephen W. Maas
This comprehensive overview of what needs to go into a well-defined scope of work will be useful to chemical engineers who are new to project engineering and project management.
Andrew J. DeDoes, Matthew D. Goetz, Michael J. Misovich
This method reproduces the vapor pressure predictions of the Soave-Redlich-Kwong and Peng-Robinson equation of state with a simple Antoine equation that uses constants derived from critical properties and the acentric factor.